5
2.Select the lighting source you want on the light illuminator. If you need UV lighting, select UV (as
shown in Figure 09).
Figure 09
3.According to the diagram on the LED module, pull the pull rod to switch the fluorescent excitation
block to the band matching the light source. If the light source selects UV lighting, the excitation block
also switches to UV.
4.Adjust the brightness knob of the light source control box to adjust the illumination brightness of the
light source according to the fluorescence intensity of the sample.
5.When it is necessary to use microscope bright field lighting, adjust the light source of the light source
control box to the minimum, turn off the light source; then pull the rod of the excitation block of the
fluorescent module to the UV / O position, and then operate the light field observation normally.
Attentions:
1. The brightness of the LED in the illuminator can be adjusted freely according to the difficulty of
excitation of the observed sample; generally, lower than the full load current is beneficial to prolong the
service life of the LED lamp bead; if allowed, it is recommended to adjust the brightness below full load
for use.
2. During fluorescent observation, the eyepiece should not directly face the light or natural light; adjust
the position of the condenser to the lowest, and reduce the aperture of the condenser. If stray light cannot
be eliminated, use a non reflective black plate to block the upper end of the condenser to prevent the
reflection from interfering with the observation.
3. In the fluorescence observation, avoid the sample fluorescence quenching caused by too long
illumination. Adjust the brightness to the minimum or turn off the power switch directly in the
observation gap, and then adjust the brightness when observing.
4. Adjust the excitation block to UV / 0, and then turn off the power supply of the fluorescent module;
